Drug explosive ion mobility spectrum detection device

Abstract

The invention discloses a drug explosive ion mobility spectrum detection device, which comprises a device body. The front end of the device body is provided with a sample injector, the rear end of the sample injector is connected with an ion mobility spectrum measuring tube, the ion mobility spectrum measuring tube is connected with a positive and negative electric field high-voltage device, the output end of the ion mobility spectrum measuring tube is connected with a processing device, a power supply device is also arranged in the device body, a positive ion ionization mobility test cavity and a negative ion ionization mobility test cavity are formed in the ion mobility spectrum measuring tube, the front ends of the positive ion ionization mobility test cavity and the negative ion ionization mobility test cavity are connected with the rear end of the sample injector through a Y-shaped throat tube, and the surface of the device body is provided with a sample injection port. The device overcomes the defects of the conventional ion mobility spectrum detection technology, achieves simultaneous test of drug explosives corresponding to positive and negative ions, has complete test andsample injection analysis functions, and can provide multifunctional ion mobility spectrum detection equipment for quickly detecting trace drug explosives for departments such as public security, customs and the like.

Description

Technical field [0001] The invention relates to a detection device for drug explosives, in particular to a drug explosive ion migration spectrum detection device for multi-sample detection and simultaneous analysis of drug explosives in the technical field of material analysis. Background technique [0002] Because the molecules of drugs and explosives can respectively generate positive ions and negative ions under the action of the ionization source, they move in opposite directions in the same electric field. In order to detect drugs and explosives at the same time, it is required to measure in two migration electric fields in different directions. Mobility, so most ion mobility spectroscopy testing equipment is intelligent for analyzing drugs alone or analyzing explosives alone. [0003] At present, in addition to the drug / explosives detection equipment that only analyzes the ion mobility spectrum of drugs or explosives, there are some ion mobility spectrum detection technologie...

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Problems solved by technology

[0003] At present, in addition to ion mobility spectrometry drug / explosive detection equipment that only analyzes drugs or explosives, there are some ion mobility spectrometry detection technologies that can detect both drugs and explosives; however, these existing technologies are difficult to continuously analyze drugs in real time and explosives, because they are a class of drugs that are positive ions and explosives that are negative ions are detected on one instrument through time switching technology, and electric fields in different directions are applied at different time periods of the same ion transfer tube to achieve positive , Determination of negative ion mobility, but it cannot continuously analyze drugs and explosives in real time, the mutual interference is large, and it is difficult to add reactants and calibration substances

[0004] There is also a type of drift tube that uses DMS to measure the mass-to-charge ratio of ions. It can add different bias voltages to measure the drift characteristics of positive and negative ions in a rapidly flipping electric field, but the mechanism is not to measure the ion mobility of the substance. Cannot place too much bias voltage to detect more classes of narcotics and explosives

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